What Type of Support Is the Following? "Gentlemen,I Want You

What type of support is the following? "Gentlemen,I want you to suppose a case for a moment.Suppose that all the property you were worth was in gold,and you had put it in the hands of Blondin,the famous rope-walker,to carry across the Niagara Falls on a tightrope.Would you shake the rope while he was passing over it,or keep shouting to him,'Blondin,stoop a little more! Go a little faster!' No,I am sure you would not.You would hold your breath as well as your tongue,and keep your hand off until he was safely over."

A) example
B) hypothetical illustration
C) factual illustration
D) explanation